I notice critical files are being backup by onbar since IDS 11.70, and I have confirmed with IBM Informix support that these files are not able to restore with IDS 11.70.
From IDS 12.10.xC2 onwards, critical files are able to be restored if previous onbar backup completed successfully.
Critical files that we mentioned:
– ONCONFIG
– SQLHOSTS
– ixbar.servernum
– oncfg_servername.servernum
To restore critical files in IDS 12.10.xC2 and above, you have 2 options:
(1) Use ‘onbar -r -cf yes’ to restore critical file during cold restore.
(2) Alternatively, you can use ‘onbar -r -cf only’ to extract critical files while Informix server is offline.